mounting a .iso image? ... missing man page

[Gary Aitken]

For some strange reason, my 9.1 system seems to be missing the section 1
man page for tar, although everything else seems to be there.

I have an iso9660 image of 9.1 release which I tried to mount to copy
the missing file, but that didn't work (can't find the CD I burned...).
  
#mount -t cd9660 -o ro FreeBSD-9.1-RELEASE-amd64-disc1.iso /mnt/tmp
mount_cd9660: /hd1/Downloads/FreeBSD/9_1/FreeBSD-9.1-RELEASE-amd64-disc1.iso: Block device required

Seems like it must be possible to mount a cd9660 image somehow without
burning an actual disc?

Gary